RAID 0 4K Random Read/Write
Each QD for every parameter tested includes 300 data points (five minutes of one second reports), to illustrate the degree of performance variability. The line for each QD represents the average speed reported during the five-minute interval.
4K random speed measurements are an important metric when comparing drive performance, as the hardest type of file access for any storage solution to master is small-file random. 4K random performance is a heavily marketed figure, and one of the most sought-after performance specifications.
Both arrays provide great performance. The WD Red array leads with 582 IOPS at QD256, and the Seagate NAS HDD array trails with an average of 456 IOPS.
The WD Red averages 567 IOPS at QD256, while the Seagate NAS trails with an average of 411 IOPS.
Our write percentage testing illustrates the varying performance of each solution with mixed workloads. The 100% column to the right is a pure write workload of the 4K file size, and 0% represents a pure 4K read workload.
The Seagate NAS HDD provides less variability, but also slightly slower speed as we mix in heavier write workloads.